Roberts was said to be boasting about his release from prison said he was “going to bang someone out tonight” and approached Mr Ayabowei and without warning or provocation punched him once to the face.

He fell backwards and his head struck the ground. One witness said the sound of it was “like something being broken”.

Roberts struck the victim with a forceful blow to the jaw breaking it. Romeo’s head struck the ground with such force his skull fractured.

The prosecuting barrister Paul Lewis QC said others intervened and an ambulance was called.

The injured man was taken initially to Ysbyty Gwynedd, Bangor and later transferred to the Royal Stoke Hospital but died never regaining consciousness.